👉 Serrognathus is a genus of small, sandstone-like fossils known for its unique features and remarkable appearance. These animals are characterized by their highly developed eyes, which are adapted for night vision and their ability to produce a distinctive, metallic glow when light hits them. Serrognathus was first described in 1896 by the zoologist Ernst Haeckel and is now considered a distinct species within the family of Apodinae, which also includes other small
